Fingers of the Mountain

Fingers of the Mountain is a quest tied in with the Chorrol Recommendation of the Mages Guild. Here is the quest in full from the recommendation page.

Find and talk to Teekeeus at the Mages Guild. He wants you to find Earana and discover why she is in Chorrol. She can be found either outside of the Mages Guild or at the Grey Mare Inn. When you talk to her, Earana tells you to bring her the book Fingers of the Mountain. Run back and tell Teekeeus of this development. Teekeeus obviously wants the book for the Guild and tells you to find it and not give it to Earana.

The book is located at the Cloud Top ruin. Follow your compass out of town and up the mountain to this small stone structure. Search the scorched body on the ground and you'll find the Fingers of the Mountain book. Return it to Teekeeus and you'll get your recommendation.

You may also return it to Earana, though the next part of this quest will simply be reversed. It's also possible to return the book to Teekeeus, speak with Earana, and steal the book from Teedeeus' room to give to Earana. Giving the book to Earana will end the Fingers of the Mountain quest and start Fingers of the Mountain - Part II.